Improvement in furnace-grates



itntni tat-na @than dei it.

ISAAC R. HARBOUR, DECEASED, OF HANNIBAL, MISSOURT; VIL

LIAM G. HARBOUR, ADMINISTRATOR.

Letters Patent No. 92,562,1Zatcd J'uly 13, 1865).

IMPROVEMENT IN FURNACE-G-RATBS.

The Schedule referred 'to in these Letters Patent and making part of the same.

To all whom it may concern:

Be it known that I, IAsAAc It BARBOUR, of Hannibal, in the county of Marion, Statevcf Missouri, have invented a new and useful Improvement in Furnace- Grates, and I do hereby declare the following to be a full', clear, and exact description thereof, which will enable those skilled in the art to make and-use the salue, reference being' had to the accompanying drawing, forming part of this specification, in which drawlng'- Figure 1 represents a plan or top View of this invention.

Figure 2 same;

Similar letters indicate corresponding parts.

This invention relates to a grate, which is particularly designed for burning shale or slate charged with hydrocarbon-oils, and inferior canuel or other coals,

is a longitudinal vertical section of the the earthy constituents of which are large, in proper# tion to the combustible constituents. My grate is construetedof an upper and lower part, the lower part forming the main grate, and/the upper part the cut-otf or supporting grate.

The main grate is constructed of two comb-shaped sections, which are hung on pivots or gudgeons at their outer edges, and geared together, by toothed segments or other mechanism, in such a manner that they can vhe conveniently turned down or agitated by the action of one level', for the purpose of dumping or stirring up the iire.

When the two sections are turned up, the ends of their grate-bars or teeth overlap each other, whereby the operation of shaking up or agitating the fire is materi. lly facilitated.

The upper or eut-olf grate is secured to asliding carriage, and it is so a -ranged that it can be pushed in overthe main grate, for the purpose of supporting. the upper portion .ofthe fuel, whilethe ashes andslags, which, from time to time, accumulate on the main grate, are dumped.

The main grate can be raised or lowered, so that the space between the same and the cut-oi grate can bc adjusted according to the nature of the fuel-to bc burned.

A represents a tire-place of a furnace, into which is fitted the main grate B.

This grate is composed of two comb-shaped sections, which are hung on gudgcons, a, at their opposite edges, so that they open and close in the centre.

The two sections are geared together by toothed segments, or in any other desirable manner; andto one of the gndgeons a is secured a hand-lever, c,

. vented from catching between said teeth.

One of the side walls of the fire-place is perfor-ated with a series of holes, to admit the prongs of the secondary or eut-off grate O.

This grate rests on a suitable guide-frame, D, and a reciprocating motion can be imparted to it by a le.- ver, E, 0r in any other desirable manner.

1f desired, this cut-oif-grate may be made in two' sections, leach ot' which hasl a distinct reciprocating motion.; and its motion maybe facilitated by placing it on wheels or friction-rollers.

By means of this cut-off grate, I am enabled to burn, successfully, such fuel as shale, slate, or inferior coal containing an excess of earthy or nou-combustible constituents. lt' such fuel is burned on an ordinary grate, a large quantity of ashes and slags accumulates-on said grate in a shoittime; and, if these slags are dumped, the whole ro goes out, and has to be renewed. This diszulvantageis obviated by my cut-ofi` grate.

When the main grate beco'mes clogged, I push the cut-cti' grate directly through the ignited mass, open the main grate, thereby dumping its contents; then replace this grate, withdraw the sliding grate, and that;

movementtlnows down the ignited mass to thc lower grate; put on a fresh supply of fuel, and so go on.

1n order to carry out this operation with different kinds of fuel, it is desirable Vto adjust thc space between the main grate and the cut-off grate. `This object is cifcct-cd by placing the gudgeons of the main grate into slots r/, so that said gra-te can be raised or lowered, as the nature of the fuel to be burned may require.

p Having thus described my invention, V

That I Vclaim as new, and desire to secure by Let-v ters Patent, is-

1. The combination of the cut-off grate C and main grate B, substantially as set forth. A

2. The slotted bearings, y, of the gudgcons of the main grate, substantially as and for the purpose set forth. y.

ISAAC R. BARBQUR.

Witnesses Josnrn N. Romains, lons W. WILcox 

